Magma generated by a hot spot rises through the rigid plates of the lithosphere and produces active volcanoes at the Earth's

Chemistry

2 answers:

lana66690 [7]3 years ago

8 0

Answer:

Actually you were right it was A) become extinct.

Explanation:

Here's why: As continental volcanoes move away from the hot spot, they cool, subside, and become extinct.

The Hawaiian hot spot has been active at least 70 million years, producing a volcanic chain that extends 3,750 miles across the northwest Pacific Ocean.

crimeas [40]3 years ago

4 0

Answer:

I think its A let me know if im wrong

Explanation:

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During the summer after your first year at Carnegie Mellon, you are lucky enough to get a job making coffee at Starbucks, but yo

docker41 [41]

Answer:

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Explanation:

6 0

3 years ago

Name two compounds with more exothermic lattice energies than scandium oxide and justify your choice.

N76 [4]

Answer:

1 . $Al_2O_3$

2. $TiO_2$

Explanation:

The more stable the ionic compound, the more is it lattice energy.

The more the charge on the cation and the anion, the greater is the lattice energy.
The less the size of the cation and the anion, the greater is the lattice energy.

Scandium oxide ( $Sc_2O_3$ ) is an oxide in which $Sc^{3+}$ behaves as cation and $O^{2-}$ behaves as anion.

The compounds which has higher lattice energy than scandium oxide are:

1 . $Al_2O_3$

This is because the charge are same on the cation and the anion as in the case of the Scandium oxide but the size of the cation $Al^{3+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.

2. $TiO_2$

This is because the charge on the cation $Ti^{4+}$ is greater than that of $Sc^{3+}$ and also the size of the cation $Ti^{4+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.